Home / 31,297.20-43,199.16-18,729.36

Finding the Fourth Proportional to 31,297.20, 43,199.16 and 18,729.36

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Solution

The fourth proportional to 31,297.20, 43,199.16 and 18,729.36 is: 25,851.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,297.20 : 43,199.16 = 18,729.36 : x
  2. Step 2: Convert to fraction form
    31,297.20/43,199.16 = 18,729.36/x
  3. Step 3: Cross multiply
    31,297.20x = 43,199.16 × 18,729.36
  4. Step 4: Simplify right side
    31,297.20x = 809,092,619.34
  5. Step 5: Solve for x
    x = 809,092,619.34/31,297.20
  6. Step 6: Final answer
    x = 25,851.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.